Color

#2f2f31

#2f2f31
hex#2f2f31
rgbrgb(47, 47, 49)
hslhsl(240, 2%, 19%)
oklchoklch(0.306 0.004 286.2)
Closest name: Carbon Fibre (#2e2e2e)Relative luminance 0.0286

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#31312f

#2f3031 · #302f31

#312f2f · #2f312f

Split-complementary

Open in tool →

#31302f · #30312f

#312f30 · #31312f · #2f3130

Contrast

#2f2f31 as textRatioAAAA largeAAAFix
Aaon white
13.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.57:1failfailfail
  • AA: use #75757a as the text (4.58:1)
  • AAA: use #97979b as the text (7.22:1)
  • AA: or shift the background to #969696 (4.52:1)
  • AAA: or shift the background to #bdbdbd (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f2f31 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2f2f31 reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f2f31
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2f2f31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f2f31-a2beb0-c859d4-1f2d2b-eaf1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md